Pump



PUMP

Filed kugust 1v 1923 2 Sheets-Sheet 1 I, I I 49 35 40 1 INVENTORS itJune 1' 1926.

R. F. SWETT ET AL PUMP Filed August 17, 1923 2 Sheets-Sheet 2 1 lllll An FIL IIIIIIIIII/IA TTORNEY Patented June '1, 1926.

UNITED STATES PATENT OFFICE.

RAYMOND 1 SWET'J. ROBERT W. NEED, O1 MEDINA, NEW YORK, ASSIGNOBS TO ERIEPUMP a ENGINEWORKS, OF MEDINA, YORK, A CORPORATION 01' w PUMP.

Application filed August 17, 1923. Serial No. 657,955.

This invention relates to pumps and more particularly to the varietyadapted for elevating liquid, as, for example, for pumping liquid from acellar, well or other low area, one object of the invention being tosimplify the construction of apparatus of this character and to providesuch a machine comprising but few parts of practical construction andmode of operation. A further object is the provision of a simple,centrifugal pump adapted for application to a sump for pumping watertherefrom against relatively high heads. Still a further object is theprovision of such a pump comprising a 15 minimum number of bearings andwith the parts conveniently arranged for access to the pump chamber andimpeller without the disconnection of piping. To these and other endsthe invention consists in certain improvements and combinations ofparts,

all as will be hereinafter more fully described, the novel featuresbeing pointed out in the claims at the end of the specification. In thedrawings: I Figure 1 is a side elevation partly in section. of anapparatus embodying the pres ent invention;

. Figure '2 is a top plan view of a base portion of the same;

Figure 3 is a plan view of the impeller; =Figure 4 is a centralsectional elevation of a construction embodying some modifications, withparts differently arranged; and

Figure 5 is a similar. view in a plane at right angles to that of Figure4.

Similar reference numerals throughoutthe several views indicate the sameparts;

The present embodiment of the invention comprises a centrifugal pump anda motor forming a pumping unit in which the motor shaft is arrangedvertically for the purpose of obtaining certain advantages hereinafterexplained, the motor being preferably of the high speed variety and thepump correspondingly designed for pumping efliciently against relativelyhigh-heads. Re ferring more particularly to-the drawing there isshown'at 10, Figuresyl, 4 and 5, a base supported by a flange 11v andhaving anuppersurface 12 formed with a bearing 13 preferably in the formof an annular seat recessed in the top of the base. Within this seat orhearing, the base is'further recessed to provide a horizontally arrangedpump the plate to the pump chamber.

chamber 14 opening through the top of the base and preferably having thewell l'mown volute form employed in pumps of this character. The basehas cored theret'hrough a suction conduit 15 communicating centrallywith the pump chamber from below and also exteriorly at the side of thebase at which end the conduit walls are threaded as at 16 for theattachment of a suction pipe 17. This conduit has the usual enlargement18 formed therein adjacent its threaded end and to prevent theundesirable collection of air in this enlargement or pocket, theinclined top of the conduit is grooved hori zontally as at 19 for theescape of such air through the pump.

" At 20 is a cored passageway communicatmg tangentially with the volute,as well understood in the art, and forming a discharge conduitextending, through the base and having at the side of the latter anexternal opening 21 for the attachment of a discharge pipe, as shown at22.

For the purpose of spacing the motor from the pump, if desired, and atthe same time locating the impeller at the bottom of a pump to avoid thenecessity of priming, there is preferably provided an intermediate frameportion comprising a plate 23 formed with a downwardly projectingcentral boss 24 fitting within the recess in the base and on the bearing13 of the latter.

This plate is detachably bolted to the top of the base, as indicated bythe bolt holes 25, Figure 2. The pump chamber is thus formed between theframe plate and base and the plate is preferably provided with a flangedopening 26 therethrough receiving a block 27 through which is formed ashaft receiving opening 28. h This latter' opening is enlarged at itsbottom as shown to provide a recess for packing serving to preventleakage of the water upwardly. At 29 is a vertically arranged motorshaft extending downwardly through the shaft opening of The end of thisshaft is preferably threaded for the reception of a threaded sleeve 30on the lower end of which is a flange or disc 31 provided with a seriesof impeller blades 32 as shown in Figure 3. The packing means is in thisinstance in the form of a rin 33 of leather or the like bent upon itselinwardly so that pressure generated by the pump tends to expand thepacking ring and seal the joint.

Rising from the peripheral portions of the frame plate 23 are supports34 carrying at their upper ends a bed or platform 35 having a centralopening 36. Bolted on this platform is an upper frame portion com:

tor housing to support and locate the same.

vertically. Rising from the peripheral portions of plate member 37 are.supports 43 carrying bearing means 44 for supporting and centering themotor by engagement with the sides of thehousing as shown. A set screw45 is provided for locking the motor against movement in the bearingmeans. The motor shaft 29 extends through the bearing opening 40, and isat this portion preferably provided with a coupling sleeve 46 threadedlyengaged with the armature section 47 of the shaft.

At 48 adjacent the base is a float on a rod 49 extending upwardlythrough'a guide s1eeve.50 fixed on platform 35 and carrying above ,thelatter space stops 51 operating an arm 52 of an electric switch 53suitably connected .for automatically starting and stopping the motor asthe water to be pumped rises and falls.

As apparent from the above description and the drawings the pump chamberand the impeller located between the base and the frame detachablysecured thereon, so that by disconnecting the frame and base theseportions may be reached whenevernecessary. The suction and dischargeconnections extend wholly through the base so that they do not have tobe disturbed for removing the frame. The vertical arrangement of thedriving shaft permits the latter to be supported merely by the motorbearings which also take up the thrust of the shaft, the bearing block27 being provlded merely for guiding the lower end of the shaft. Theapparatus thus comprises an exceedingly small number of parts. Thevertlcal arrangement furthermore prevents spread of the water along theshaft from the pump to the motor and in the arrangement described abovethe latter is located at a safe elevation while the pump is disposed atthe lower liquid level so that it does not have to be primed.

When desired, however, the intermediate frame portions may be. removed.and'the plate member 37 attached directly to the top of the base inplace of the intermediate plate 23. In this arrangement the parts occupythe relation shown in Figures 4 and 5, in which the base 10 has the sameconstruction already described. The motor carrying frame may also havethe same construction as the upper frame portion described above but inthis view several modifications are shown. Thus the plate 54 has thesame lower surface construction as plate member 37 for cooperation withthe base and forming the upper side of the pump chamber. In thisembodiment however, the packing means is varied comprising a glandrecess 55 and a gland sleeve 56 carried by a bar 57 arranged foroperation by studs 58 and nuts carried thereby to force the gland sleeveinto the recess and compress the packing as well understood in the art.At 59 is a lubri;

eating cup and at 60 is a pressure relieving cock. The plate 54 hasrising therefrom the peripheral supports 61 carrying bearing means 62supporting and centering the motor 63, the lower end of which issupported and located vertically by abutment means 64. This arrangementof the parts affords the advantages described above, and it is to benoted in this instance that the pump impeller is carried directly by themotor shaft so that the motor bearings are the only ones required,thereby eliminating the necessity for many parts.

As already stated a high speed motor is preferably employed so that thesize of the pump chamber and impeller are materially reduced therebyreducing the friction of the liquid and also afiording a pressureadapted to work against relative high heads.

We claim as our invention:

1. In a pump, the combination of a base having an impeller chamberprovided with suction and discharge passages, an impeller within saidchamber, a frame unit having.

an annular portion forming a closure for said chamber and provided withan opening therethrough and also having an upright bearing portion and avertically disposed motor including a housing having its lower endresting upon said annular portion whereby the motor is supportedindependently of its shaft, the latter projecting into said opening andconnected with said impeller, said upright bearing portion being adaptedto engage said motor above said annular portion to holding it thereon.

2. Ina pump, the combination of a base, a frame having a bearing on anddetachably secured to said base, a volute chamber formed horizontallybetween said base and frame, suction and discharge conduits connectingwith said chamber through said base, a motor including a shaft, abutmentmeans on the frame for supporting and loeating the motor vertically andindependently of its shaft, bearing means on the frame engaging themotor between its ends to hold it on said abutment means with its shaftextending vertically and concentric with said chamber and an impeller insaid chamber adapted to be supported on and driven by the lower end ofsaid shaft.

3. In a centrifugal pump, the combination of a base, a frame comprisinga plate having a bearing on and detachably secured to said base andhaving a shaft receiving opening therethrough, a horizontal pump chamberclosed by said plate, suction and discharge means communicating withsaid chamber through said base, a driving motor, abutment means on saidplate for engagement with the end of the motor housing to support andlocate the motor Vertically independently of its shaft, bearing means onsaid frame for engagement with the s1des of said motor housinglntermedlate its ends to center the motor with its shaft extendingvertically through said plate opening, and an impeller in said chambersupported and driven by the lower end of said motor shaft.

4. In a centrifugal pump, the combination of a basehaving a bearing, anintermediate frame portion carried by the bearing of said base anddetachably secured to said base,.a pump chamber formed between saidintermediate portion and base, suction and discharge conduitscommunicating with said chamber through said base, "an upper frameportion carried by said intermediate portion and adapted also to becarried on the bearing of said base and detachably secured to thelatter, a vertically disposed mo.- tor on said upper frameportion'supported thereon independently of its shaft, the latterextending vertically downward, and an impeller carried on the lower endof said shaft in said chamber.

5. In a centrifugal pump, the combination of a base having a bearingformed on its upper surface, an intermediate spacing frame portioncomprising a plate carried on the bearing of said base and detachablysecured tothe latter, said plate having a shaft opening therethrough andsaid base having the upper surface thereof within said bearing recessedto form a pump chamber,

suction and discharge passages, an impeller within said chamber, aclosure for the chamber,.a vertically disposed motor resting upon andsupported by the closure independently of the motor shaft, the latterprojecting through the closure and-connected with the impeller, andupstanding means carried by the base adapted to engage the motor to holdit in uprlght position upon the closure.

RAYMOND F. SWETT. ROBERT w. NEEL.

